I had had a very difficult evening,
a night, with a very sick lady and failed completely to
advance one of these very thin, flexible catheters. And the next day I was watching
my kids at the beach and there was a sail boat.
On an apparently calm sea and it had a big spinnaker
out in front of it. So, I thought well now the probable answer
is to have a propulsion mechanism.
A sail… Or something like that… A parachute! And stick that
on the end of a flexible catheter and that would work.